Please see these Apple Documents.
If your device has been disabled in the App Store and iTunes
https://support.apple.com/en-us/HT208856
Contact Apple Support here
https://getsupport.apple.com Get to the screen shown below the easy way by first clicking on a computer image and then a second one; selecting "Other Mac Topics;" selecting "The topic is not listed," typing in "My computer is broken;" and clicking "Continue" several times. Get to the screen shown below the easy way by first clicking on a computer image and then a second one; selecting "Other Mac Topics;" selecting "The topic is not listed," typing in "My computer is broken;" and clicking "Continue" several times.

For additional support, in the case of iTunes, you can Contact iTunes Support using this form https://support.apple.com/en-euro/itunes-contact. But, also be sure and see the "Support Page" link here.
You also can contact iTunes worldwide support via text or chat using this link
https://support.apple.com/choose-country-region/itunes